Title:
表示装置
Document Type and Number:
Japanese Patent JP4131838
Kind Code:
B2
Abstract:
As for the dual emission display device, since light is emitted to the opposite directions from a light emitting element, the both electrodes provided opposite to the light emitting element are transparent/ translucent. Accordingly, difficulty in black display is created, and thus, the contrast would be reduced. That results from that the back of the display device can be seen through in black display, that is in the OFF state, since the both electrodes have transparency. Addressing the difficulty in black display with respect to an electronic device and the like including a dual emission display device achieving reduction in the thickness and light weighting, pure black display is performed by providing the dual emission display device part with a polarizing plate or a circularly polarizing plate. Further, the contrast can be improved.
Inventors:
Shunpei Yamazaki
Yoshiharu Hiragata
Tetsuji Ishitani
Yoshiharu Hiragata
Tetsuji Ishitani
Application Number:
JP2003188990A
Publication Date:
August 13, 2008
Filing Date:
June 30, 2003
Export Citation:
Assignee:
Semiconductor Energy Laboratory Co., Ltd.
International Classes:
H05B33/02; G09F9/00; G09F9/30; G09F9/40; G09G3/00; H01J1/62; H01J63/04; H01L27/15; H01L27/32; H01L51/10; H01L51/50; H01L51/52; H05B33/12; H05B33/14; H05B33/22
Domestic Patent References:
| JP2002040428A | ||||
| JP2003005710A | ||||
| JP2004095340A | ||||
| JP2004205702A |
Foreign References:
| WO2001080204A1 |
Attorney, Agent or Firm:
Nobuyuki Watanabe